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I was wondering if someone has done something similar:
(social.graves.cl)
Home Assistant is open source home automation that puts local control and privacy first. Powered by a worldwide community of tinkerers and DIY enthusiasts. Perfect to run on a Raspberry Pi or a local server. Available for free at home-assistant.io
do you have a gas meter? surely it would be simpler to capture the operation of the meter either electronically if it’s a smart meter or optically if it has a moving part or dial?
Even if your heating is gas it should be possible to disaggregate that usage by measuring the consumption over a minute or so.